Improvement in ventilators



T. w. B-RAGHER.

Ventilators.

No.15 148, Pz lte nted N0v.2 1874s Mair 1% l H"IIIIIIIIHII'IIIIIIIIIIIIIIIIIIIIIIIIIIlIllllIlllllllllIIIIIBIIIIIIIIIIIIIIIIIIIIIIIII. ,1

THE GRAPHIC CO PNOTO'LITH.398 vl PARK PLACE, NY.

FFIG.

THOMAS W. BRAOHER, OF NEW YORK, N. Y.

IMPROVEMENT IN VENTILATOR S.

Specification forming part of Letters Patent No. 157,] 48, datedNovember 24,1874; application filed November 6, 1874.

To all whom it may concern:

Be it known that I, THOMAS W. BRACHER, of the city, county, and State ofNew York, have invented a certain new and useful Improvement inVentilators, of which the following is a specification:

This invention is illustrated in the accompanying drawing, in whichFigure 1 represents a plan or face view. Fig. 2 is a transverse sectionin the plane 00 m, Fig. 1. Fig. 3 is a similar section in the plane 3 y,Fig. 1. Fig. 4 is a detached inside view of the removable bridge. Fig. 5is a sectional plan of the barrel detached. Fig. 6 is a transverse section of the clampingrin g.

Similar letters indicate corresponding parts.

This invention relates to an improvement on that class of ventilatorswhich is described in an application for a patent made by George Havelland myself, which was allowed by the Oommissioner of Patents May 9,18.74, and of which 1 am the sole owner? My present improvement consistsin a ventilator-wheel stamped out of sheet metal, with radiating obliquevanes, which are connected at their outer edges by a ring or flange,said ring and vanes being made of the same piece of sheet metal, in sucha manner that the vanes are retained in the proper position, and alight, cheap, and durable ventilator-wheel is obtained. The bearings ofthe axle of the ventilator-wheel are improved by raising the plates inwhich the same are formed.

In the drawing, the letter A designates the barrel or casing of myventilator, which is struck up of sheet metal, and which is provided onone end with a bridge or cross, a, made of the same piece of metal withthe barrel. On the other end of said barrel are formed cavities b, forthe reception of a bridge or cross, 0, which is composed of two bars, c

0 Fig. 4, each being punched out of sheetmetal, and provided with tenonsat its ends, to fit the cavities b. Each of the arms 0 c is made with acircular plate in its center, and the central plate of the arm 0 isfurnished with ears 0, which can be turned over the edge of the centralplate of the arm 0 so that by means of said ears and central plates, thearms 0 0 can be firmly united to form a cross, the arms of which are atright angles to each other. The central plate of the arm 0 is convex,and it is provided with r which is held in position byturning downpartsof the edges of the plate f, so that they catch over the edge of saiddisk. In the center of this disk is a cavity, h, which forms the bearingfor the other end of the axle c of the ventilator-wheel.

By means of the convex disk 9 and the convex central plate of the arm 0the bearings of the axle obtain sufficient depth to provide a good hold,and at the same time said bearings are exactly concentric with thebarrel, so that the ventilator-wheel revolves with the least possiblefriction.

The wheel B is stamped out of sheet metal, and it is provided with aseries of radiatingvanes, i, which are connected at their outer edges bya ring, j, that is stamped out of the same piece of sheet metal with thebody of the wheel. By this ring the vanes are steadied and retained inthe proper position, and the ventilator-wheel can be made very lightwithout losing its durability.

The barrel A is provided at one edge with a flange, k, and at itsopposite edge with lugs or cars l, Fig. 3. Over the body of said barrelis fitted a flanged ring, m, Fig. 6, and if my ventilator is to besecured to a pane of glass, I cut a hole in the pane large enough toadmit the body of the barrel; then I pass this body through said hole,apply the flanged ring on, and, finally, by turning the ears I outwardover the flanged ring, the barrel is fastened in the desired position,the edge of the hole in the pane of glass being retained between theflange 7c and the flanged ring m.

My ventilator runs perfectly noiseless, and it can be applied with greatadvantage to windows in stores, offices, or dwelling-houses.

What I claim as new, and desire to secure by Letters Patent,'is

1. A ventilatonwheel stamped out of sheet all constructed and operatingsubstantially as metal, With radiating oblique vanes, which shown anddescribed. are connected at their outer edges by a ring, In testimonythat I claim the foregoing I said ring and the vanes being made of thehave hereunto set my hand this 2d day of same piece of sheet metalsubstantially as set November, 1874.

forth.

2. The raised central plate of the arm 0 BRAOHER' and the raised orconvex disk 9 0n the bridge Witnesses: or cross a, in combination withthe axle e of W. HAUFF,

the ventilator-wheel B, and with the barrel A, E. F. KASTENHUBER.

